<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.box{
				border: 1px solid;
				display: flex;
				justify-content: center; /* 元素居中对齐 */
				
				justify-content: space-between; /* 子元素两端对其 */
				
				justify-content: space-evenly; /* 子元素所有地方间距都相等 */
				
				justify-content: space-around;  /* 把元素外边距平分 */
				width: 360px.,
				
				\
			}
			.box div{
				width: 100px;
				height: 100px;
				background-color: skyblue;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<div>1</div>
			<div>2</div>
			<div>3</div>
		</div>
	</body>
</html>